Obsolete Setting does not close the trade after 30M, here is what it accually does (which is VERY COOL).

Say you are in a position LONG on the EURUSD and you are up 30 pips (with a take profit of 40 and stoploss of 30). Sudden, the conditions of the market change and you start to lose your profits. What Obsolete settings does it check every 30M (or 15 or 60 or whatever you specify) to see if the conditions are still there for you to stay in your long position. If after 30 minutes it says, "Conditions have now changed, you should be in a short position now!" it immediately CLOSES your LONG position wherever you have it (say at this point you are only up now 5 pips) and opens a SHORT position in the opposite direction!!! That way, you do no lose ALL your profits and you don't have to take a stoploss either. Thus, you just made 5 pips on the trade and did not lose 30 that you probably would have. Plus, since you are now trading in the opposite directiion, there is a good chance you can capitalize on changing market rather then just losing money.

I hope that helps everyone and if I am wrong, Nich or someone else, please correct.